William m



UNITED STATES PATENT OFFICE.

VILLIAM M. BROOKE, OF BROOKLYN, ASSIGNOR TOl-IIMSELF, AND GEORGEV.,MARTIN, OF NEW YORK, N. Y.

PERMUTATloN-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 465,450, dated December22, 1891. Application filed February 28, 1891. Serial No. 383.271. (Nomodel.)

To all whom it may concern: v

Be it known that I, WILLIAM M. BROOKE, of Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Permutation-Locks, of which the following is a full,clear, and exact description.

My invention relates to permutation-locks; and the object of myinvention is to improve the construction of such locks. v

To this end my invention consists of certain features of construction,and combination of parts, which will be hereinafter described andclaimed.

Reference is to be had to the accompanying drawings, formingapart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a perspective View showing my improved lock in the lockedposition. Fig. 2 is a central vertical section of the same. Fig. 3 is aside elevation of the staple with a portion of one member broken away toshow the swinging toothed bar, and Fig. 4 is a plan View of thecover-plate.

The case A of the lock is divided into two compartments and is open atone side of one compartment. The larger A2 ot the compartments containsthe numbered tumblers B and is closed at the top by a slidingcover-platev wardly-extending rim or shoulder a', the

opening through which is of a size to loosely tit the member of thelocking-staple received i in the compartment. The cover-plate B (seeFig. 4) is essentially semicircular in form, and is held in a groove bin the wall of the compartment A2 near the top thereof. The plate isapertured at b2 for the passage of one member of the locking-staple. Thetumblers B have central openings to receive one member of thelocking-staple and have transverse openings b leading from the centralopening, so that when the transverse openings align the locking-staplemay be withdrawn. The staple C is reduced near the ends, the reducedportion corresponding in length to the inside length of the lock-case,one member C' being'adapted to enter the compartment A2 and the openingsin the tumblers B `and the opposite member C2 being adapted to enter thecompartment A. 1 VThe memberv C is slotted longitudinally, and pivotedin the 5 slot near the extreme end is a bar E, which eX- tendslongitudinally through. the slot. The bar E is provided withlaterallyextending teeth e, adapted to engage the tumblers and preventthe withdrawal of the staple. 6o

The toothed bar E is pivoted at one end, as shown at e', and theopposite end is slotted and held to slide laterally on a pin e2, whichholds it in place in the slot of the member C.

It will be observed that the teeth e are inv clined toward the free endof the member, so that they may be easily inserted through the openingin the tumblers; but the opposite sides of the teeth are abrupt and atright angles to the bar E, so that they will engage the 7o tumblers andhold the bar and the staple in place. Abent springF is secured to theback of the bar E and is arranged so that it will normally project fromthe side of the .mem-

ber C. This spring will yield sufficiently so and allow the bar E toswing into the slot, so 8o that the teeth Will not project from themember C; but after the teeth have passed the inner edges of thetumblers the spring will cause the bar to swing, so that the teeth willengage the tumblers, and the staple cannot be withdrawn until they areturned so as to make the slots b align with the teeth e. The member C2of the staple which enters the compartment A of the lock-case isprovided with a spring-catch G, which is secured to it 9c.

at a point adjacent to the outer end of the lock-case, and the spring isdoubled to form a shoulder g, which engages y the shoulder a inthe-lock-case, and thus pre'vents'the accidental removal of the staple;but the bore of the compartment A may be of a size to only looselyreceive the staple member, and a recess may be provided in the wall ofthe compartment to receive the shoulder ot' the spring.

The catch G is also bent so as to extend out- Ioo ward through the endof the case, and its extreme end g is bent outward, so thatit may beeasily operated by the finger. To permitl of the necessary lateralmovement of the catch, the member C2 is recessed opposite the catch, asshown at c', so that to release the catch from the shoulder a it ismerely needful to press inward 011 the free end g', which thus with theshoulder ct.

When the lock is suspended-as upon a car-door, for instancethe continualjolting of the car will sometimes cause the tumblers B to turn,so thatthe slots b will align,and in this case the lock-case would fall fromthe staple if it were not for the catch G; but this prevents the removalof the staple, and the tumblers will soon turn out of alignment, so thatno harm is done. WVhen the lockingstaple is removed from the lock, thecoverplate B can be easily removed and the combination chan ged; butwhen the locking-staple is in place the cover is held and access cannotbe had'to the tumblers. l

To insert the staple and fasten the lock, it

disengages the shoulder g from engagement is only needful to push themember Cin through `the tumblers regardless of their position and themember C2 into the compartment A', when the teeth e engage the tumblersand hold the staple securely in place. To remove the staple, the tumblers are turn ed until the slots b align with .the teeth e, When bysimply pressing inward. on the catch G the staple may be removed.

As a precaution against the lock-case and staple becoming separated, achain D is se cured to a perforated ear a on one end of the lock-caseand to a similar earc on the staple C. Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent,is-

l. In a permutation-lock, the combination, with the tumblers, thelock-staple, and the case having its tumbler-holdin g compartment openat the top and provided with an internal groove, of an "aperturedcover-plate, substantially as described. v

2. A lock comprising a two-part case, one compartment ofwhich is open atone side and at the top and is provided With a series of tumblers andthe other of which is provided with an internal shoulder, and a stapleto enter the case, said staple having one member provided with teeth toengage the tumblers andthe other with a spring-catch to engage theinternal shoulder, substantially as described.

3. In a lock-case which is dividedinto two compartments, one of which.is open at the top, provided with a groove in its Wall, and adapted toreceive tu mblers, and the other of Which is provided With an internalshoulder, the combination, with said case, of an apertured cover-plateand a locking-staple having teeth on one member and a locking-spring onthe other member, substantially as shown and described.

4. The combination, with the two-part lockcase, one compartment of Whichis provided I With tumblers and the other with a shoulder, of a stapleadapted to enter the case, one member of the staple having teeth toengage the tumblers and the opposite member having a spring-catch toengage the shoulder, substantially as shown and described.

WILLIAM M. BROOKE.

WVitnesses:

E. M. CLARK, W. S. WALKER.

